"Their Royal Highnesses The Duke and Duchess of Cambridge are very pleased to announce that The Duchess of Cambridge is expecting a baby," the Palace said in a statement. "The Queen, The Duke of Edinburgh, The Prince of Wales, The Duchess of Cornwall and Prince Harry and members of both families are delighted with the news."

Middleton — or Duchess Catherine as she's officially known — was admitted to a Central London hospital Monday with acute morning sickness, the Palace reported.